Is PPM1D p.Pro495= (c.1485A>G) pathogenic?

PPM1D p.Pro495= (c.1485A>G) is classified Likely benign in PPM1D (ClinVar, Single submitter, 1 submitter; last evaluated 2023-10-19). Very rare (popmax 0.000169%, nfe).

How common is PPM1D p.Pro495= (c.1485A>G) in the general population?

PPM1D p.Pro495= (c.1485A>G) is very rare (popmax 0.000169%, nfe) (gnomAD).

PPM1D p.Pro495=

c.1485A>G · rs2544470270 · VCV2751034

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.000169%, nfe)

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.68	GERP -4.3
Overall
CADD	2.44	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.000169% European (non-Finnish) · 2/1,180,008 alleles

Filtering AF 2.8e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.1e-05%

Overall 0.000205% 3/1,461,828 alleles · very rare

Ancestry group	Frequency	1 in
Remaining individualsnot grpmax-eligible	0.0016%	62,512
European (non-Finnish)grpmax	0.000169%	590,005

Remaining individuals shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: PPM1D
Protein: p.Pro495=
Coding: c.1485A>G
MANE Select: NM_003620
dbSNP: rs2544470270
Type: single nucleotide variant
Location: chr17:60663219 (GRCh38)
Gene constraint: LOEUF 1.183 · pLI <0.01 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 68.15 · 1 PDB
Residue 495: a UniProt-annotated variant site (in jdvs); a UniProt-annotated variant site (in oc; may be associated with disease susceptibility); a UniProt-annotated variant site (in bc; may be associated with disease susceptibility; gain-of-function mutation that results in increased negative regulation of p53 expression in response to ionizing radiation exposure); a UniProt-annotated variant site (in bc; may be associated with disease susceptibility)

Full PPM1D gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

PPM1D p.Cys407Ter Pathogenic/Likely pathogenic ★★ same type
PPM1D p.Gln404Ter Pathogenic ★★ same type
PPM1D p.Gln462Ter Likely pathogenic ★★ same type
PPM1D p.Glu423Ter Pathogenic ★★ same type
PPM1D p.Ser421Ter Pathogenic/Likely pathogenic ★★ same type
PPM1D p.Trp427Ter Pathogenic ★★ same type
PPM1D p.Arg357Cys Uncertain significance ★★ ⚠ same type
PPM1D p.Arg557Ter Uncertain significance ★★ same type

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/ppm1d-p-pro495 (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown